Non-inverting high-pass 1st order

Transfer function: $H(j\omega )=\frac{1+j{\displaystyle \frac{\omega }{{\omega }_1}}}{1+j{\displaystyle \frac{\omega }{{\omega }_2}}}$

High-pass cut-off frequency: $f_1=\frac{1}{2\pi .(R_1+R_2)C}$

Low-pass cut-off frequency: $f_2=\frac{1}{2\pi .R_{1}C}$

Gain when ω < ω₁: $|H(j\omega )|\stackrel{\omega <{\omega }_1}{\to }1$

Gain when ω > ω₂: $|H(j\omega )|\stackrel{\omega >{\omega }_2}{\to }\frac{{\omega }_2}{{\omega }_1}=1+\frac{R_2}{R_1}$